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临床妊娠结局
Pregnancy outcomes of the IVF-ET cycles
| Item | Elective single embryo transfer (n=39) | Double embryo transfer (n=200) | P |
| Pregnancy rate | 56.4% (22/39) | 66.0% (132/200) | 0.252 |
| Implantation rate | 56.4% (22/39) | 37.8% (151/400) | 0.023 |
| Sponeous abort rate | 4.5% (1/22) | 15.9% (21/132) | 0.204 |
| Ectopic pregnancy rate | 9% (2/22) | 6.8% (9/132) | 0.658 |
| Multiple pregnancy rate | 0/22 | 22.7% (30/132) | 0.008 |
| Live birth rate | 48.7% (19/39) | 51.5% (103/200) | 0.751 |
| OHSS rate | 0/39 | 2/200 | 1.000 |
